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Supercapacitor electrode material and preparation method thereof

A technology for supercapacitors and electrode materials, applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc.

Inactive Publication Date: 2018-10-19
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far, there has been no report on the preparation of cobalt sulfide / nickel hydroxide / nickel foam supercapacitor electrode materials by potential deposition method. The preparation process is simple, the process is green and environmentally friendly, and the composite electrode material has excellent capacitance properties

Method used

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  • Supercapacitor electrode material and preparation method thereof
  • Supercapacitor electrode material and preparation method thereof
  • Supercapacitor electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1)Co 9 S 8 Preparation of / NF samples:

[0032] Weigh 1mmol of CoCl 2 ·6H 2 0 and 5 mmol of urea in a beaker, add deionized water therein, and magnetically stir for 15 minutes to completely dissolve, then add the gained transparent pink solution into a polytetrafluoroethylene reactor, add pretreated nickel foam and carry out hydrothermal Reaction, 100°C, 7h; after naturally cooling to room temperature, take out the nickel foam, wash with water and alcohol several times, and dry to obtain Co(CO 3 ) 0.35 Cl 0.20 (OH) 1.10 Precursor samples. Weigh 0.25mmol Na 2 S, add deionized water to it, stir magnetically for 15 minutes until it is completely dissolved, then add the obtained transparent solution into a polytetrafluoroethylene reaction kettle, add precursor samples for hydrothermal reaction, 100 ° C, 5 h; wait for natural cooling to room temperature After that, the nickel foam was taken out, washed and dried to obtain Co 9 S 8 / NF samples. Let cool and set a...

Embodiment 2

[0036] (1)Co 9 S 8 Preparation of / NF samples:

[0037] Weigh 2mmol of CoCl 2 ·6H 2 0 and 10 mmol of urea in a beaker, add deionized water therein, and magnetically stir for 15 minutes until completely dissolved, then add the resulting transparent pink solution into a polytetrafluoroethylene reactor, add pretreated foamed nickel for hydrothermal Reaction, 100°C, 7h; after naturally cooling to room temperature, take out the nickel foam, wash with water and alcohol several times, and dry to obtain Co(CO 3 ) 0.35 Cl 0.20 (OH) 1.10 Precursor samples. Weigh 0.5mmol Na 2 S, add deionized water to it, stir magnetically for 15 minutes until it is completely dissolved, then add the obtained transparent solution into a polytetrafluoroethylene reaction kettle, add precursor samples for hydrothermal reaction, 100°C, 5h; wait for natural cooling to room temperature After that, the nickel foam was taken out, washed and dried to obtain Co 9 S 8 / NF samples. Let cool and set aside...

Embodiment 3

[0041] (1)Co 9 S 8 Preparation of / NF samples:

[0042] Weigh 3mmol of CoCl 2 ·6H 2 0 and 15mmol of urea in a beaker, add deionized water therein, and magnetically stir for 15min to dissolve completely, then add the gained transparent pink solution in the reaction kettle of polytetrafluoroethylene, add the pretreated foamed nickel to carry out hydrothermal Reaction, 100°C, 7h; after naturally cooling to room temperature, take out the nickel foam, wash with water and alcohol several times, and dry to obtain Co(CO 3 ) 0.35 Cl 0.20 (OH) 1.10 Precursor samples. Weigh 0.75mmol Na 2 S, add deionized water to it, stir magnetically for 15 minutes until it is completely dissolved, then add the obtained transparent solution into a polytetrafluoroethylene reaction kettle, add precursor samples for hydrothermal reaction, 100°C, 5h; wait for natural cooling to room temperature After that, the nickel foam was taken out, washed and dried to obtain Co 9 S 8 / NF samples. Let cool a...

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Abstract

The invention belongs to the technical field of super capacitor material preparation and relates to a cobalt sulfide / nickel hydroxide / foam nickel super capacitor electrode material and a preparation method thereof. Cobalt sulfide is grown on foamed nickel, and nickel hydroxide is electrochemically deposited on the surface of the cobalt sulfide to form a composite material of cobalt sulfide / nickelhydroxide / foam nickel. According to the super capacitor electrode material and the preparation method, a transition metal hydroxide is loaded on a surface of the cobalt sulfide with a high specific surface area and good electrical conductivity through a composite mode, and the cobalt sulfide / nickel hydroxide / foam nickel composite material is prepared. Through the synergistic effect between components of the composite material, the components promote virtues and avoid shortages, and at the same time, combined with a high cycle life, high power density and high stability of a double-electric-layer capacitor and a high specific capacitance of a pseudo capacitor, the overall performance of the super capacitor is improved.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor material preparation, and relates to a cobalt sulfide / nickel hydroxide / nickel foam supercapacitor electrode material and a preparation method, especially a composite material with a simple preparation process, good capacitance performance and excellent stability Preparation. Background technique [0002] Supercapacitor is a new type of energy storage device, which has the advantages of high power density, short charging time, long cycle life, and environmental protection. It can be applied to energy storage devices, power supply systems and many electronic devices. [0003] Transition metal sulfides (Co 9 S 8 ) are widely used as electrode materials in energy storage materials due to their excellent electrochemical performance, high conductivity, and complex structure. So far, about supercapacitor electrode materials Co 9 S 8 There is little research on the use of , but all with Co 9 ...

Claims

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Application Information

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IPC IPC(8): H01G11/26H01G11/30H01G11/46H01G11/86
CPCH01G11/26H01G11/30H01G11/46H01G11/86Y02E60/13
Inventor 陈敏夏萍姜德立李娣孟素慈
Owner JIANGSU UNIV
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